<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404</title>
    <style>
        html{
            height: 100%;
        }
        body{
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100%;
        }
        div{
            width: 800px;
            height: 500px;
        }
        h1,div{
            text-align: center;
        }
        h1{
            font-size: 50pt;
        }
        a{
            font-size: 20pt;
            text-decoration: none;
        }
    </style>
</head>
<body>
    <div>
        <h1>Page Not Found</h1>
        <a href="/">页面丢失，点此返回</a>
    </div>
</body>
</html>